DE19882956T1 - Modulierung der Positionsfehler-Nichtlinearität zur Verbesserung des Servoverhaltens - Google Patents
Modulierung der Positionsfehler-Nichtlinearität zur Verbesserung des ServoverhaltensInfo
- Publication number
- DE19882956T1 DE19882956T1 DE19882956T DE19882956T DE19882956T1 DE 19882956 T1 DE19882956 T1 DE 19882956T1 DE 19882956 T DE19882956 T DE 19882956T DE 19882956 T DE19882956 T DE 19882956T DE 19882956 T1 DE19882956 T1 DE 19882956T1
- Authority
- DE
- Germany
- Prior art keywords
- linearity
- modulation
- position error
- error non
- improve servo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59605—Circuits
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7115898P | 1998-01-13 | 1998-01-13 | |
US09/052,896 US6091567A (en) | 1998-01-13 | 1998-03-31 | Modeling position error nonlinearity to improve servo performance |
PCT/US1998/009854 WO1999036907A1 (en) | 1998-01-13 | 1998-05-14 | Modeling position error nonlinearity to improve servo performance |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19882956T1 true DE19882956T1 (de) | 2001-03-22 |
Family
ID=26731219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19882956T Ceased DE19882956T1 (de) | 1998-01-13 | 1998-05-14 | Modulierung der Positionsfehler-Nichtlinearität zur Verbesserung des Servoverhaltens |
Country Status (7)
Country | Link |
---|---|
US (1) | US6091567A (de) |
JP (1) | JP2002509330A (de) |
KR (1) | KR100430319B1 (de) |
CN (1) | CN1285946A (de) |
DE (1) | DE19882956T1 (de) |
GB (1) | GB2349013B (de) |
WO (1) | WO1999036907A1 (de) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3080364B2 (ja) * | 1997-12-25 | 2000-08-28 | インターナショナル・ビジネス・マシーンズ・コーポレ−ション | ディスクドライブ装置、シーク制御装置 |
US6381088B1 (en) | 1998-11-06 | 2002-04-30 | Acorn Technologies, Inc. | Apparatus for developing a dynamic servo signal from data in a magnetic disc drive and method |
US6397369B1 (en) | 1998-11-06 | 2002-05-28 | Acorn Technologies, Inc. | Device for using information about the extent of errors in a signal and method |
USRE40413E1 (en) * | 1998-11-06 | 2008-07-01 | Purchased Patent Management Llc | Method and apparatus for developing a dynamic servo signal from data |
US6369974B1 (en) * | 1999-02-09 | 2002-04-09 | Western Digital Technologies, Inc. | Disk drive with method of constructing a continuous position signal and constrained method of linearizing such position signal while maintaining continuity |
US6545836B1 (en) * | 1999-11-12 | 2003-04-08 | Acorn Technologies, Inc. | Servo control apparatus and method using absolute value input signals |
US6594103B1 (en) | 1999-11-12 | 2003-07-15 | Acorn Technologies, Inc. | Read channel generating absolute value servo signal |
US6631046B2 (en) | 2000-01-10 | 2003-10-07 | Seagate Technology Llc | Servo track writing using extended copying with head offset |
US6724558B2 (en) | 2000-04-19 | 2004-04-20 | Jpmorgan Chase Bank | Servo writing in a disc drive with substantially identical heads having read and write elements in a radial offset position |
US6624963B2 (en) | 2000-04-19 | 2003-09-23 | Seagate Technology Llc | Static track spacing error correction in a disc drive |
US6674607B2 (en) * | 2000-08-04 | 2004-01-06 | Seagate Technology Llc | Method and apparatus for determining high order polynomials for linearization of position signals |
DE10196540T1 (de) | 2000-08-23 | 2003-07-31 | Seagate Technology Llc | Verfahren und Vorrichtung zum Qualifizieren von Köpfen mit Spurabtastdaten beruhend auf einer PES-Linearität |
US7082007B2 (en) | 2000-09-27 | 2006-07-25 | Seagate Technology Llc | Method to achieve higher track density by allowing only one-sided track encroachment |
US6768609B2 (en) | 2000-11-27 | 2004-07-27 | Seagate Technology Llc | Reducing position error signal nonlinearity through iterative calibration of a compensation table |
US6768606B2 (en) | 2000-12-12 | 2004-07-27 | Storage Technology Corporation | Track position error determination |
JP3877133B2 (ja) | 2001-02-16 | 2007-02-07 | 富士通株式会社 | 信号再生方法及び記憶装置 |
JP3561246B2 (ja) * | 2001-08-02 | 2004-09-02 | 株式会社東芝 | ディスク記憶装置及びサーボ情報の位置ずれ補償方法 |
US6574070B2 (en) * | 2001-08-09 | 2003-06-03 | Seagate Technology Llc | Model reference generator for a disc drive |
US6798606B2 (en) | 2002-01-22 | 2004-09-28 | International Business Machines Corporation | Position error signal linearization calibration |
WO2003090226A1 (en) * | 2002-04-18 | 2003-10-30 | Seagate Technology Llc | Bi-directional servo track writing to minimize sidewall writing at high skew angles |
US7567403B2 (en) * | 2002-04-18 | 2009-07-28 | Seagate Technology Llc | Bi-directional servo track writing to minimize sidewall writing at high skew angles |
US6940677B2 (en) * | 2002-10-01 | 2005-09-06 | International Business Machines Corporation | Writing distinct servo patterns on individual transducers according to transducer read/write head characteristics in a data storage device |
JP3961456B2 (ja) * | 2003-06-30 | 2007-08-22 | 富士通株式会社 | ヘッド位置復調方法及びデイスク装置 |
US7139150B2 (en) | 2004-02-10 | 2006-11-21 | Marvell International Ltd. | Method and system for head position control in embedded disk drive controllers |
US7177110B2 (en) * | 2004-11-08 | 2007-02-13 | Matsushita Electric Industrial Co., Ltd. | Systems and rotatable media for increasing the usable position error signal (PES) region |
US7177109B2 (en) * | 2004-11-08 | 2007-02-13 | Matsushita Electric Industrial Co., Ltd. | Methods for increasing the usable position error signal (PES) region |
US7064914B1 (en) | 2004-12-22 | 2006-06-20 | Seagate Technology Llc | Position error signal quality |
US7130146B2 (en) * | 2005-03-16 | 2006-10-31 | Matsushita Electric Industrial Co., Ltd. | Two-pass-per-track servo burst patterns |
US7843661B2 (en) * | 2005-08-24 | 2010-11-30 | Seagate Technology Llc | Controller with fractional position algorithm |
US8756399B2 (en) * | 2006-01-25 | 2014-06-17 | Seagate Technology Llc | Mutable association of a set of logical block addresses to a band of physical storage blocks |
US7616399B1 (en) | 2006-12-07 | 2009-11-10 | Western Digital Technologies, Inc. | Disk drive servo control techniques to preserve PES continuity |
US7876523B1 (en) | 2009-08-07 | 2011-01-25 | Western Digital Technologies, Inc. | Disk drive initializing position feedforward compensation with velocity feedforward compensation |
US8189286B1 (en) | 2010-05-21 | 2012-05-29 | Western Digital Technologies, Inc. | Disk drive employing velocity insensitive servo burst pattern |
US7916422B1 (en) | 2010-05-28 | 2011-03-29 | Western Digital Technologies, Inc. | Disk drive rotating phase based servo bursts based on radial location of head |
US8077428B1 (en) | 2010-06-23 | 2011-12-13 | Western Digital Technologies, Inc. | Disk drive correcting position error signal based on velocity of head |
US8531798B1 (en) | 2010-12-13 | 2013-09-10 | Western Digital Technologies, Inc. | Disk drive adjusting servo burst signals to compensate for radial velocity of the head |
US8934186B1 (en) | 2014-03-26 | 2015-01-13 | Western Digital Technologies, Inc. | Data storage device estimating servo zone to reduce size of track address |
US9558772B1 (en) | 2014-04-04 | 2017-01-31 | Seagate Technology Llc | Position error signal (PES) detection |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5721648A (en) * | 1992-04-10 | 1998-02-24 | Seagate Technology, Inc. | Multirate digital control system for use with a system having a linear transfer function, such as a head positioning system in a magnetic disc drive |
US5510939A (en) * | 1992-07-16 | 1996-04-23 | Micropolis Corporation | Disk drive with adaptive positioning |
US5576909A (en) * | 1995-02-16 | 1996-11-19 | Ministor Peripherals International Limited | Method for positioning a data transducer head in a rotating disk drive data storage device |
US5781365A (en) * | 1995-03-07 | 1998-07-14 | Cirrus Logic, Inc. | Sliding mode control of a magnetoresistive read head for magnetic recording |
US5875066A (en) * | 1996-12-13 | 1999-02-23 | International Business Machines Corporation | Method and apparatus for real-time filtering of a position error signal for a disk drive servo system |
US6046878A (en) * | 1997-04-30 | 2000-04-04 | Seagate Technology, Inc. | Object positioning using discrete sliding mode control with variable parameters |
-
1998
- 1998-03-31 US US09/052,896 patent/US6091567A/en not_active Expired - Lifetime
- 1998-05-14 JP JP2000540537A patent/JP2002509330A/ja active Pending
- 1998-05-14 DE DE19882956T patent/DE19882956T1/de not_active Ceased
- 1998-05-14 WO PCT/US1998/009854 patent/WO1999036907A1/en active IP Right Grant
- 1998-05-14 GB GB0017530A patent/GB2349013B/en not_active Expired - Fee Related
- 1998-05-14 CN CN98813055A patent/CN1285946A/zh active Pending
- 1998-05-14 KR KR10-2000-7007735A patent/KR100430319B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2349013B (en) | 2002-08-07 |
US6091567A (en) | 2000-07-18 |
JP2002509330A (ja) | 2002-03-26 |
GB2349013A (en) | 2000-10-18 |
KR20010034122A (ko) | 2001-04-25 |
WO1999036907A1 (en) | 1999-07-22 |
GB0017530D0 (en) | 2000-09-06 |
KR100430319B1 (ko) | 2004-05-03 |
CN1285946A (zh) | 2001-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: SEAGATE TECHNOLOGY LLC, SCOTTS VALLEY, CALIF., US |
|
8131 | Rejection |